The Simpson Titen HD 1/2 in. x 8 in. Washer-Head Heavy-Duty Screw Anchor is a high-strength concrete and masonry screw anchor built for demanding structural applications in both cracked and uncracked concrete. Its low-profile washer-head design makes it the right choice for sill plate installations and anywhere a minimal installed head height is critical - modular wall and floor systems can be placed directly on top without notching wall framing to fit the anchor. A T50 6-lobe drive reduces stripping risk and eases driving, while serrated teeth on the anchor tip cut cleanly into the base material and reduce the torque needed to seat the anchor.

Key Features

• Qualified per ICC-ES AC193 and ACI 355.2 for cracked and uncracked concrete - meets recognized engineering standards for static, wind, and seismic loading conditions, giving you confidence in code-sensitive structural applications.
• Standard fractional sizing where hole size matches anchor size - a standard 1/2 in. ANSI tolerance drill bit is all you need, eliminating the cost and hassle of sourcing specialty tooling.
• Removable after installation - ideal for temporary anchoring or situations where fixtures must be repositioned or replaced in the future without leaving a permanent fastener behind.
• Washer-head profile keeps installation flush - allows screw anchor use in applications where a hex head would be incompatible, including low-clearance assemblies and modular system installations.
• Serrated cutting tip reduces installation torque - the tip's serrated teeth facilitate cleaner cutting into concrete or masonry, making the anchor easier to drive and reducing wear on your tooling.
• T50 6-lobe drive reduces stripping - the 6-lobe drive geometry grips more securely than traditional drive styles, making installation faster and lowering the chance of cam-out under high torque.
• Zinc plated carbon steel construction - provides a durable finish suited for interior and protected structural applications; note that this coating is not recommended for permanent exterior use or highly corrosive environments.
• Socket adapter and T-drive bits included in each box - the pack includes a 1/2 in. socket adapter and two T-drive bits, so you have the right accessories on hand to begin installation immediately.

Why This Product

• Code-compliant performance in the most demanding concrete conditions - qualification under ICC-ES AC193 and ACI 355.2 for cracked and uncracked concrete under seismic, wind, and static loads means this anchor meets the documentation requirements that engineers and inspectors look for on structural projects.
• Purpose-built for sill plate and modular system installations - the washer head's low installed profile solves a real framing problem: wall and floor systems sit flat on top without any notching, saving labor and keeping assemblies structurally sound.
• No specialty hardware required - standard tools do the job - because the anchor follows standard fractional sizing, your existing 1/2 in. drill bits work perfectly, and the included drive bits and socket adapter mean you are ready to install straight from the box.
• Flexibility for temporary or adjustable anchoring - unlike adhesive anchors or expansion anchors that are difficult or impossible to reverse, the Titen HD screw anchor can be removed, making it a practical choice for staged construction, temporary connections, or fixture layouts that may need to change.

Specifications

• Model Number: THD50800WH
• Anchor Size: 1/2 in. x 8 in.
• Material: Carbon Steel
• Coating/Finish: Zinc Plated
• Diameter: 1/2 in.
• Head Diameter: 1 3/8 in.
• Drive Type: T50 6-Lobe
• TPI: 3
• Drill Bit Diameter: 1/2 in.
• Recommended Fixture Hole Size: 11/16 to 3/4 in.

Approved Applications

• Cracked and uncracked concrete anchoring
• Masonry anchoring
• Sill plate applications
• Modular wall and floor system installations requiring a low installed head profile
• Temporary anchoring where fixtures may need to be moved or removed
• Static, wind, and seismic loading conditions per ICC-ES AC193 and ACI 355.2

What's Included

Each pack contains (15) Washer-Head Titen HD Screw Anchors, 1/2-in. socket adapter and (2) T-drive bits.

Frequently Asked Questions

Can the Titen HD THD50800WH be used in cracked concrete?

Yes. This anchor is qualified in accordance with ICC-ES AC193 and ACI 355.2 for both cracked and uncracked concrete under static, wind, and seismic loading conditions.

Do I need a special drill bit to install this anchor?

No special drill bit is required. The Titen HD is designed to install using standard-sized ANSI tolerance drill bits. Because it features standard fractional sizing, the hole size matches the anchor size - a 1/2 in. drill bit is used for this 1/2 in. anchor.

Why choose a washer-head anchor over a hex-head anchor?

The washer-head design is ideal for applications where a minimal installed head profile is necessary. It allows modular wall and floor systems to be installed on top of the anchor without notching wall framing, and it accommodates screw anchor applications that are incompatible with a hex-head style.

Is this anchor suitable for permanent outdoor or corrosive environments?

No. This anchor is zinc plated and is not recommended for permanent exterior use or highly corrosive environments. For such conditions, a stainless steel or hot-dip galvanized anchor should be considered instead.

Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.